| Sparganium erectum subsp. neglectum | GB, VC20 Hertfordshire, Ippollyts Brook | Joseph Edward Little | Watson Botanical Exchange Club | 3/10/1929 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC19 North Essex, Broxbourne | J H Albrecht | J H Albrecht | 5/7/1930 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC45 Pembrokeshire, Gumfreston | Charles Bailey | | 3/10/1887 5/10/1887 | BSBI |
| Sparganium erectum subsp. neglectum | GB, VC10 Isle of Wight, Freshwater,Golden Hill Fort | Charles Bailey | Botanical Exchange Club of The British Isles Augustin Ley | 11/10/1888 | BIRM |
| Sparganium erectum subsp. neglectum | GB, VC45 Pembrokeshire, Penally Railway Station | Charles Bailey | Botanical Exchange Club of The British Isles Augustin Ley | 5/10/1887 | BIRM |
| Sparganium erectum subsp. neglectum | GB, VC45 Pembrokeshire, Tenby | Charles Bailey | Botanical Exchange Club of The British Isles Charles Bailey | 5/10/1887 | BIRM |
| Sparganium erectum subsp. neglectum | GB, VC45 Pembrokeshire, Tenby | Charles Bailey | William Hadden Beeby Charles Bailey | 3/10/1887 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC47 Montgomeryshire, Dovey Junction | William Charles Barton | William Charles Barton | 30/8/1923 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, North Camp | William Hadden Beeby | | 28/9/1894 | BON |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, North Camp | William Hadden Beeby | | 28/9/1884 | BON |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey | William Hadden Beeby | | 1884 | BIRM |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, North Camp | William Hadden Beeby | William Hadden Beeby | 29/9/1884 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Reigate Heath | William Hadden Beeby | William Hadden Beeby | 5/10/1884 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Cobham | William Hadden Beeby | William Hadden Beeby | 19/7/1885 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Albury | William Hadden Beeby | William Hadden Beeby | 28/10/1883 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC62 North-east Yorkshire, Scalby | | William Hadden Beeby | 9/1896 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Reigate Heath | William Hadden Beeby | William Hadden Beeby | 7/7/1886 6/8/1886 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC62 North-east Yorkshire, Stain Dale | Isaac Henry Burkill | Isaac Henry Burkill William Hadden Beeby | 9/1896 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC4 North Devon, Braunton | | William Hadden Beeby | 14/9/1889 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Reigate Heath | William Hadden Beeby | William Hadden Beeby | 31/8/1884 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Aldershot | William Hadden Beeby | William Hadden Beeby | 28/9/1884 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, North Camp | William Hadden Beeby | William Hadden Beeby | 23/5/1886 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Nutfield | William Hadden Beeby | William Hadden Beeby | 29/5/1886 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Reigate | William Hadden Beeby | William Hadden Beeby | 6/8/1885 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Merstham | William Hadden Beeby | William Hadden Beeby | 4/6/1870 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Merstham | William Hadden Beeby | William Hadden Beeby | 20/7/1870 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Nutfield | William Hadden Beeby | William Hadden Beeby | 29/5/1886 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Woking | William Hadden Beeby | William Hadden Beeby | 15/9/1889 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Reigate | William Hadden Beeby | William Hadden Beeby | 18/9/1887 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Ockley | William Hadden Beeby | William Hadden Beeby | 28/8/1884 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, North Camp | William Hadden Beeby | William Hadden Beeby | 23/5/1886 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Penton Hook | William Hadden Beeby | William Hadden Beeby | 9/8/1885 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Godstone | William Hadden Beeby | William Hadden Beeby | 16/8/1885 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Reigate Heath | William Hadden Beeby | William Hadden Beeby | 5/10/1884 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Nutfield | William Hadden Beeby | William Hadden Beeby | 5/8/1885 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC4 North Devon, Braunton | William Hadden Beeby | William Hadden Beeby | 27/8/1889 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Reigate Heath | William Hadden Beeby | William Hadden Beeby | 5/10/1884 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Camberley GB, VC17 Surrey, Reigate Cultivated | William Hadden Beeby | William Hadden Beeby | 25/6/1885 22/5/1886 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC17 Surrey, Blackwater | William Hadden Beeby | William Hadden Beeby | 30/8/1884 | SLBI |
| Sparganium erectum subsp. neglectum | GB, VC62 North-east Yorkshire, Scalby Beck | Isaac Henry Burkill | William Hadden Beeby Arthur Bennett | 9/1895 | SLBI |